terrible manager service

Today i went to Mozambik to buy my lunch ,firstly i was on lunch and did my order i waited for 30 min for the food to arrive when i was still at the shop i checked my order to find out that they did not put in my roll i told the lady and when she went to the kitchen they told her that rolls are finished ,they sent someone to go get the rolls i waited another 20mins for the rolls when i addressed the manager about this he said its not his problem that i am on lunch i just need to wait for the roll then he started talking in a foreign language knowing that i wont understand when the rolls arrived he came and said don't buy at my shop anymore if you cant wait ,he didn't understand that i am on lunch and he didn't care for the fact that he spoke in a different language so i am not sure if he swearing or what.Managers need to have training of how to treat people i work in an environment that deals with clients and i know how to treat a client he did not even bother to apologize for the inconvenience the restaurant has BAD CUSTOMER SERVICE VERY BAD .